GROUND-STATE OF THE TWO-DIMENSIONAL ELECTRON-GAS
GROUND-STATE OF THE TWO-DIMENSIONAL ELECTRON-GAS
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DOI：
10.1103/physrevb.39.5005
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发表时间：
1989-03-15
影响因子：
3.7
通讯作者：
CEPERLEY, DM
中科院分区：
文献类型：
--
作者：
TANATAR, B;CEPERLEY, DM
用变分和固定结点绿色函数Monte Carlo方法计算了密度为1≤ rs ≤ 100的二维电子气的基态性质.我们的计算预测在密度rs = 37±5时会出现维格纳结晶。电子系统被发现是在正常的（顺磁）流体状态下的跃迁密度，但完全极化状态是非常接近的能量。我们已经将正常相和极化相中几种感兴趣的密度下的对分布函数g（r）、静态结构因子S（k）和动量分布n（k）的值制成表格。给出了自旋磁化率χ的估计。
Variational and fixed-node Green’s-function Monte Carlo calculations have been performed to find the ground-state properties of the two-dimensional electron gas in the density range 1≤ r s≤ 100. Our calculations predict a Wigner crystallization at the density r s≃ 37±5. The electron system is found to be in the normal-(paramagnetic) fluid state below the transition density, but the fully polarized state is very close in energy. We have tabulated the values of pair distribution function g (r), the static structure factor S (k), and the momentum distribution n (k) at several densities of interest both in the normal and the polarized phases. An estimate of the spin susceptibility χ is also given.